C语言程序的设计苏小红版答案.docx

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1、2. 2#includemain()Ifloatx=2.5,y=2.5,z=2.5;printf(x=%fn,x);printf(y=%fn,y);printf(z=%fn,z);)3. 1(1)#includemain()Iinta=12,b=3;floatx=18.5,y=4.6；printf(%dn,(float)(a*b)2);printf(%dn”,(int)x%(int)y)；)3. 2#includemain()Iintx,b,b1,b2,s；printf(,Inputx:)；scanf(%d,x);b2=x100;b1=(-b2*100)10;b0=x%10;s=b0*100+

2、b1*10+b2;printf(s=dn,s);)3. 3#include#incIudemain()Ifloatrate=0.0225；floatn,capital,deposit;printf(Inputn,capitaI：);scanf(%f,%f,&n,&capital);deposit=capitaI*pow(1+rate,n)；printf(deposit=%fn,deposit)；J3. 4include#incIudemain()floata,b,c；doubIex,y;printf(Inputa,b,c：;scanf(%f,%f,%f,&a,&b,&c);x=(-b+sqrt

3、(b*b-4*a*c)/(2*a);y=(-b-sqrt(b*b-4*a*c)/(2*a);printf(x=%f,y=%fn,y);14. 1(1)#includemain()(chard=,a,c2=,b,c3=c;printf(,a%cb%cc%cn,d,c2,c3);)4.1 (2)#includemain()(inta=12,b=15;printf(,a=%d%,b=%d%n,a,b);)4.2 (3)#includemain()(inta,b；scanf(%2d%*2s%2d,&a,&b);printf(%d,%dn,a,b);)4.3 #includemain()(longa,b

4、;floatx,y；scanf(%d,%dn,&a,&b);scanf(%f,%fn,&x,&y);printf(a=%d,b=%dn,a,b);printf(x=f,b=%fn,x,y);J5. 1#includemain()(floata；printf(Innputa:,);scanf;if(a=0)a=a;printf(a=%fn,a)；)else(a=-a;printf(a=%fn,a)；)5. 2#includemain()Iinta；printf(Inputa:)；scanf(%d,a);if(a%2=0)(Printf(a是偶数)；)else(printf(a是奇数)；)5. 3

5、#include#incIudemain()Ifloata,b,c,s,area；printf(Inputa,b,c：);scanf(n%f,%f,%f,&a,&b,&c);if(a+bc&a+cb&b+ca)(s=(a+b+c)/2；area=(float)sqrt(s*(s-a)*(s-b)*(s-c)；printf(area=%fn,area)；)else(Printf(不是三角形)；)5.4#include#incIudemain()floata,b,c,y；printf(,Inputa,b,c：;scanf(%f,%f,f,&a,&b,&c);if(a=0)(Printf(该方程不是

6、一元二次方程n);)if(b*b-4*a*cO)(x=(-b+sqrt(b*b-4*a*c)/(2*a)；y=(-b-sqrt(b*b-4*a*c)/(2*a);Printf(x=%f,y=%fn,x,y);)elseif(b*b-4*a*c=0)(=-b(2*a);y=-b(2*a);printf(=%f,y=%fn,x,y);)else(Printf(该方程无实根n);)5.5#includemain()(intyear,flag；printf(Inputayear：)；scanf(%d,&year)；if(year%4=0&year%400!=0year%400=0)(fag=1;)el

7、se(fag=0;)if(fIag=Dprintf(,%disaleapyear!n,year)；else(printf(%disnotaleapyear!n,year)；)5.6#includemain()Iintyear,flag；printf(Inputayear：)；scanf(,%d,&year)；fIag=year%400=0year%4=0&year%100!=0?1：0；if(f|ag=1&flag!=0)(printf(%disaleapyear!n,year);)else(printf(%disnotaleapyear!n,year)；)5.7#includemain()I

8、charch；printf(Inputch:);scanf(%c,&ch)；if(ch=,a,aach=,A,Sch=,Z)(ch=getchar()；ch=ch+32;printf(%c,%dn,ch,ch);)elseprintf(%c,ch)；5. 8#includemain()charch;printf(Inputch:,);scanf(%c,&ch);if(ch=48&ch=65&ch=97&ch=122)(Printf(ch是小写字母n);)elseif(ch=32)(printf(,ch是空格n);printf(ch是其他字符n);6. 9#includemain()(intsc

9、ore,grade；printf(Inputscore：);scanf(%d,&score);grade=score10;if(score100)Iprintf(Inputerrorn);if(score=90&score=80&score=70&score=60&score=0&score60)(printf(%dEn,score);)J7. 10#includemain()(intyear,month;printf(Inputyear,month：,)；scanf(%d,%d,&year,&month);if(month121month=0)(printf(errormonthn,);)e

10、Ise(switch(year,month)(case12：case10：case8：case7：case5：case3：case1：printf(31天n);break；case11：case9：case6：case4：printf(30天n);break；case2：if(year%4=0&year!=0year%4OO=O)(printf(,29天n);)else(printf(,28天n);)break；default：printf(,Inputerrorn);)1J8. 1(1)includemain()(inti,j,k；charspace=,;for(i=1；i=4;i+)(fo

11、r(j=1；j=i；j+)(printf(%c,space);)for(k=1；k=6；k+)(printf(*);)printf(,n)；)8.1 (2)#includemain()Iintk=4,n；for(n=0；nk；n+)(if(n%2=0)continue;k-；)printf(k=%dn,n=%dn,k,n);6. 1(3)#includemain()I1 ntk=4,n；for(n=0;nk;n+)(1 f(n%2=0)break；k一；)printf(k=%d,n=%dn,k,n);J6.2(1)#includemain()(inti,sum=0；for(i=1；i=101；

12、i+)(sum=sum+i；)printf(sum=%dn,sum)；)6.2(2)#includemain()Ilongi;longterm,sum=0;for(i=1；i=101；i=i+2)Iterm=i*(i+1)*(i+2);sum=sum+term;)printf(sum=%ldn,sum);)6.2(4)#include#incIudemain()(1 ntn=1;floatterm=1.0,sign=1,sum=0；while(term=1e-4)term=1.0/sign；sum=sum+term;sign=sign+n;n+;)printf(sum=%fn,sum)；)6.

13、2(5)#include#incIudemain()Iintn=1,count=1；floatx；doublesum,term；printf(Inputx：);scanf(%f,&x);sum=x；term=x;do(term=-term*x*x/(n+1)*(n+2)；sum=sum+term;n=n+2；count+；while(fabs(term)=1e-5)；printf(sin(x)=%f,count=%dn,sum,count)；J6.3includemain()(intx=1,find=0;whiIe(Ifind)(if(x%2=1&x%3=2&x%5=4&x%6=5&x%7=0

14、)(printf(x=%dn,x)；find=1;x+;J)*int,find=0;for(x=1；!find;x+)Iif(x%2=1&x%3二二2&x%5二二4&x%6二二5&x%7二二0)(printf(x=%dn,x)；find=1;)*/6. 4includemain()(inti,n；longp=1,m=1;printf(Inputn：;scanf(%d,n);for(i=1;i=n;i+)IP=i*i;m=i*i*i;printf(p=%d,m=%dn,i,p,i,m)；)6.5#includemain()Ifloatc,f；for(c=-40；c=110；c=c+10)(f=9

15、5*c+32;printf(,f=%fn,1,f)；)J6.6include#incIudemain()Iintn;doublec=0.01875,x；dox=x*pow(1+c,12)-1000；n+;whiIe(x0)；printf(x=dn,);J6. 7includemain()intn=0;floata=100.0,c；printf(Inputc:)；scanf(%f,c);doIa=a*(1+c)；n+;)while(a=200);printf(,n=%dn,n)；)6. 8#include#incIudemain()(intn=1,count=1；doublesum=1,term

16、=1；while(fabs(term)=1e-5)(term=pow(-1,count)*(1.0/(n+2);sum=sum+term;n=n+2；count+；)sum=4*sum;printf(sum=%f,count=%dn,sum,count);)6. 9#include#incIudemain()(intn=1,count=1；doublesum=1,term=1；while(fabs(term)=1e-5)(term=term*(1.0n);sum=sum+term;n+;count+；)printf(sum=%f,count=%dn,sum,count)；)6. 10#incl

17、ude#incIudemain()intx；for(x=100；x=999；x+)(if(x=pow(x100,3)+pow(x10%10,3)+pow(x%10,3)printf(x=%dn,x)；)J6. 11includemain()(inti=0,n；longsum=0,term=1；printf(,Inputn:)；scanf(%d,n);doi+;term=term*i；sum=sum+term;)while(sumn)；printf(,%dn,i-1);)7. 12#includemain()I1 nti,n,m,count=0,sum=0;printf(Inputn：);sca

18、nf(%d,&n);for(i=1；i0)(sum=sum+m;count+；)else(break；)printf(sum=%d,count=%dn,sum,count);)J6.13#includemain()inti,n,m,count=0,sum=0;printf(Inputn:)；scanf(%d,&n);for(i=1；i01m0)(sum=sum+m;count+；)else(break；)printf(sum=%d,count=%dn,sum,count)；)6.14#includemain()Iint,y,z；for(x=0；x=17；x+)(for(y=0;y=25；y+)

19、(3*x+2*y+z=50;z=30-y；if(3*x+2*y+z=50&x+y+z=30)printf(,x=%d,y=%d,z=%dn,*,x,y,z)；)6.15#includemain()Iintx,y;for(x=0;x=98；x+)(y=98-;2*x+4*y=386;if(x+y=98&2*x+4*y=386)printf(x=%d,y=%dn,x,y)；)6.16#includemain()(intx,y,z；for(x=0；x=20；x+)Ifor(y=0;y=33；y+)(3*y+5*x+z3.0=100;z=100-y;if(5*x+3*y+z3.0=100&z+x+y=

20、100)(printf(x=%d,y=%d,z=%dn,x,y,z)；1)J6. 17#includemain()(int,y,z；for(x=1；x=9;x+)(for(y=1；y0)Iprintf(x=%d,y=%d,z=%dn,x,y,z);)7. 1#includeintSquare(inti)returni*i;)intmain()Iinti=O;i=Square(i)；for(;i3;i+)(staticinti=1;i+=Square(i);printf(%d,i);)Printf(%dn,i);return0；)7. 2#includeinthour,minute,second

21、；voidupdateO(second+；if(second=60)(second=0；minute+；)if(minute=60)(minute=0;hour+;)if(hour=24)hour=0;)voiddisplay()(printf(%d,%d,%dn,hour,minute,second)；)voiddeIay()(intt;for(t=0;t100000000；t+)；)intmain()inti；voidupdayeO,dispIay(),deIay();for(i=0;i1000000；i+)update()；display()；deIayO；)return0;)7. 3#

22、includeintGetMax(inta,intb)；intmain()(int,y,max；printf(Inputx,y：)；scanf(%d,%d,&x,&y)；max=GetMax(x,y)；printf(max=%dn,max)；return0；)intGetMax(intm,intn)(if(m=n)returnm;elsereturnn;J8. 4includeintLCM(intn,intm);intmain()Iinta,b；printf(,Inputa,b:);scanf(%d,%d,&a,&b)；printf(%dn,LCM(a,b)；return0；)intLCM(i

23、ntn,intm)Iint;1 ntfind=O;for(x=1；!find;x+)if(x%n=0&x%m=0)find=1;J)return-1;)7. 5#includelongFact(intn)；intmain()(intm,a；printf(Inputm:)；scanf(%d,&m);for(a=1；a=m；a+)(printf(%d!=%ldn,a,Fact(a)；)return0；JlongFact(intn)(1 nti;longresult=1；for(i=2;i=n;i+)result*=i；returnresult；J7. 6#includelongFact(intn)

24、;intmain()Iintm；longret；printf(Inputm:)；scanf(%d,&m);ret=Fact(m)；printf(ret=%dn,ret)；return0；JlongFact(intn)(1 nti;Iongresult=1,sum=0；for(i=2;i=n;i+)result*=i;sum=sum+result;)returnsum；)7.7(1)#includeintGcd(inta,intb);intmain()1intm,n；printf(Inputm,n:)；scanf(%d,%d,&m,&n)；printf(%dn,Gcd(m,n)；returnO;

25、)intGcd(inta,intb)1intt,min,find=O;min=ab?a：b；t=min;for(t=min；!find；t-)(a%t=0;b%t=O;if(a%t=O&b%t=O)returnt;)find=1;)7. 7(2)#includeintGcd(inta,intb);intmainO(intm,n;printf(Inputm,n：);scanf(n%d,&n)；printf(%dn,Gcd(m,n);return0;JintGcd(inta,intb)(intr,temp;r=a%b;if(r=0)returnb;elsedo(temp=b;b=r;a=temp;

26、r=a%b;Jwhile(r!=0);returnb;J8. 1(1)includevoidFunc(intx)(=2;)intmain()(intx=10;Func(x);printf(%d,x);return0；J8.1 (2)#includevoidFunc(intb)(intj;for(j=0;j4;j+)(bj=j;)intmain()(staticinta=5,6,7,8),i；Func(a);for(i=0;i4;i+)(printf(%d,ai);)return0；)8.2(1)intPositiveNum(inta,intn)inti,count=0;for(i=0;i0)c

27、ount+；)return0；)8.2(2)voidFib(longf,longn)(inti；f0=0;f1=1;for(i=2;in;i+)(fi=fi-1+fi-2;)8.2(3)#includeintmain()Iinta10,n,max,min,maxPos,minPos；for(n=0；n10；n+)(scanf(%d,&an);)max=min=a0；maxPos=minPos=0;for(n=0；nmax)(max=an;maxPos=n;)elseif(anmin)(min=an;minPos=n;J)printf(max=%d,pos=%dn,max,maxPos)；pri

28、ntf(min=%d,pos=%dn,min,minPos)；return0；8.3voidDivArray(int*pArray,intn)(inti;for(i=0;in;i+)(pArrayi=pAttay0；)8.4#include#defineN40intFaiINum(intscore,intn)；voidReadScore(intscore,intn);intmain()(intscoreN,n;printf(Inputn：);scanf(%d,&n);ReadScore(score,n);FaiINum(score,n)；printf(FaiINumstudentsare%dn

29、,FaiINum(score,n)；return0；)intFaiINum(intscore,intn)Iinti,count=0;for(i=0;in；i+)(if(scorei60)count+；)returncount；)voidReadScore(intscore,intn)(inti;printf(Inputscore：);for(i=0;in;i+)(scanf(%d,scorei)；)8.5#include#defineN40intHighAver(intscore,intn);intReadScore(intscore);intmain()IintscoreN,n;n=Read

30、Score(score);PrintfCHighAverstudentsare%dn,HighAver(score,n);return0；)intHighAver(intscore,intn)(inti,count=0,sum=0,aver；for(i=0;in;i+)(sum=sum+scorei；aver=sumn;)for(i=0;iaver)count+；)returncount；JintReadScoreCintscore)(inti=-1；doi+;printf(Inputscore:);scanf(,%d,scorei);)whiIe(scorei=0)；returni；)8.6

31、#include#defineN40intReadScoreCintscore,longnum)；intFindMax(intscore,longnum,intn);intmain()IintscoreN,n,max,num,t；longnumN；t=FindMax(score,n);max=scoret；num=numt;printf(max=%d,num=%dn,max,num)；return0；JintReadScoreCintscore,longnum)(1 nti=-1；doi+;printf(InputstudentsIDandscore：);scanf(%ld%d,&numi,s

32、corei);)whiIe(numi0&scorei=0)；returni；)intFindMax(intscore,longnum,intn)Iintmax,i；max=score0;for(i=1；imax)max=scorei；)returni；)8.7#include#defineN40intRead(inta)；intChangeArry(inta,intn);intmain()(intaN,n;printf(%dn,ChangeArry(a,n);return0；)intRead(inta)I1 nti;for(i=0;i9;i+)(printf(Inputa：);scanf(%d

33、,|,ai);returni；JintChangeArry(inta,intn)intmax,min,i,maxpos,minpos,term；max=min=score0；for(i=1；imax)max=scorei；maxpos=n;else(aimin)min=ai；minpos=n;temp=maxpos；maxpos=minpos；minpos=temp;returnai;8.10#include#defineN5voidmain()(intaNN；intsum=0；inti,j;Printfc请输入一个%d*d的矩阵n,N,N);for(i=0；iN;i+)(for(j=0；jN

34、;j+)scanf(%d*,&aij);)for(i=0；iN;i+)(for(j=0；jN;j+)(if(i=ji+j=N-1)sum=sum+aij;）Printf（对角线元素之和为:%dn,sum）；8.11#incIude#defineN2#defineM3voidmain()IintaNM,bNM；inti,j,sum1=0,sum2=0,sum=0;Printf(请输入一个%d*d的矩阵n”,N,M);for(i=0；iN;i+)Ifor(j=0;jM；j+)(scanf(%d,&aij)；sum1=sum1+aij;)PrintfC请输入一个%d*d的矩阵n”,N,M);for(

35、i=0；iN；i+)(for(j=0；jM；j+)(scanf(%d,&bij);sum2=sum2+aij;)sum=sum1+sum2;printf(sum=%dn,sum)；)8.12#include#defineN7voidYangHui(intaNN,intn);voidmain()Iinti,j,n,bNN；printf(,Inputn：;scanf(%d,n);YangHui(b,n)；for(i=0;in;i+)(for(j=0;j=i;j+)(printf(,4d,bij);)printf(,n)；voidYangHui(intaNN,intn)(inti,j;for(i=0

36、;in;i+)(ai0=1；aii=1;)for(i=2;in;i+)(for(j=1；ji；j+)aij=ai-1j-1+ai-1j；)8.13#include#defineN12voidmain()(inti;intfN=1,1);printf(%dr%dn,O,fO);printf(%dr%dn,1,f1);for(i=2;iN;i+)Ifi=fi-1+fi-2;printf(%d：%dn,i+1,fi);)8.14#include#include#include#defineN6000voidmain()(intaN,i;intb1=0,b2=0,b3=0,b4=0,b5=0,b6=0；f